Select ALL the equations where a = 8 is a solution. Group of answer choices

1. a + 11 = 15

2. 1 = 8 ÷ a

3. 15 + a = 23

4 . 42 = 7a

a - 5 = 3

I know for sure that 3 is and ik the very last one is

Step-by-step explanation:

a + 11=15 would make a equal to 4 bc you would subtract 11 from both sides

I'm not sure about the second one but I think a would equal 1/8

3 obviously equals 8 cuz u subtract 15 from both sides

the 4th onei think is 6 I can't remember what 42 divided by 7 is rn so buut I think it's 6

and the last one is also 8

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.