Can someone check my answers?

The amount of money in Alexander’s account is, = 4000 − 70, where is the amount in dollars and is the time in weeks.

a) Which variable is independent and which is dependent?

Dependent is -70x and independent is 4000

b) In which week will there be $1701 in the account?


y=4000-70(x)
1701=4000-70(x)
-70x=1701-4000
-70x= -2299
x=-2299/-70
x=2299/70
x=32.843
x=33

c) How much will the amount in Alexander’s account change if the time increases by 15 weeks?


y=4000-70(x)
y=4000-70(15)
y=2950

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

the answer is 0.000652422

but if you ment to ask what is 6131 divided by 4, it is 1532.75.

step-by-step explanation: