9514 1404 393
Answer:
y = 20·2^x
Step-by-step explanation:
Use the given points to write two equations, then solve for 'a' and 'b'.
20 = a·b^0 = a
5120 = a·b^8 = 20·b^8 ⇒ 256 = b^8
b = 256^(1/8) = 2
Your function is ...
y = 20·2^x
<u>Note: We are not given the weekly fee, but I'll assume it as $80 only to be able to solve the problem and explain the procedure.</u>
Answer:
<em>Ms. White will pay $110 if she drives 100 miles</em>
Step-by-step explanation:
Ms. White wants to rent a car for a week. It costs a weekly fee of $80 plus a $0.30 fee per mile driven.
If we call m = the number of miles driven by Ms. White during the week, then the cost of renting the car is:
C(m)= 80 + 0.30m
If Ms. White drives m=100 miles during the week, then the cost is:
![C(100)= 80 + 0.30\cdot 100](https://tex.z-dn.net/?f=C%28100%29%3D%2080%20%2B%200.30%5Ccdot%20100)
C(100)= 80 + 30
C(100)= $110
Ms. White will pay $110 if she drives 100 miles
<u><em>Answer:</em></u>
<u><em>Here's the answer:</em></u>
<u><em>r = √ ( x2 + y2 )</em></u>