Answer:
C. 325.
Step-by-step explanation:
The last term a5 = 85
a1 = 45
Sum of n terms = n/2 (a1 + l)
So here we have n = 5, a1 = 45 and the last term l = 85
= (5/2)(45 + 85)
= 5/2 * 130
= 325.
Answer:
She bought 8 books
Step-by-step explanation:
8.96/1.12
The fixed amount is 6 because it's 6 dollars for 0 miles traveled.
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Answer:
y = -3x - 11
Step-by-step explanation:
Use the formula y = mx + b to write an equation, where:
y = y-coordinate of point
x = x-coordinate of point
m = the slope
Plug in the known coordinates and slope:
4 = -3(-5) + b
Simplify:
4 = 15 + b
4 - 15 = b
-11 = b
Rewrite the equation:
y = -3x - 11
