Please help me on these, thank you 4. Write the equation of the line in POINT SLOPE form for a line that passes through (-5,-1) and (-3,-8).
5. Write the equation of the line in SLOPE INTERCEPT form for a line that passes through
both (2,5) and (4, 13).
6. Write the equation of the line in SLOPE INTERCEPT form for a line that passes through
(-6,-1) and has a slope of -3.
I
7. Write the equation of the line in SLOPE INTERCEPT form for a line that has
a slope of – and a yint of 4.
8. Write the equation of the line that is parallel to 8x - 2y = 5 and passes through (1,2).
9. Write the equation of the line that has a m=0 and passes through the ordered pair (3,4).
10. Write the equation of the line that is perpendicular to the line y = 4/5x-5 and passes through (4,0)

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

you have to wait a while to reward brainliest if only one person answers. if 2 people answer there should be a "mark brainliest" on their question.

i cant fully remember all of the ranks, here are the ones i remember.

hand, ambitous, ace, genius.

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).