Find the sum.Find the sum of the first 20 terms of the arithmetic sequence: -8, -18, -28, -38, . . .
A. -2055
B. -2060
C. -208
D. -2160
Answer: B
Mathematics
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Write the number in scientific notation.0.000080518
A. 8.0518 × 104 B. 8.0518 × 10-4 C. 8.0518 × 10-5 D. 8.0518 × 105
Mathematics
Find the indicated composition.f(x) = 
; g(x) = 8x + 5Find (g ? f)(x).
A. (g ? f)(x) = x - 
B. (g ? f)(x) = 8x + 35
C. (g ? f)(x) = x
D. (g ? f)(x) = x + 10
Mathematics
Find the perimeter of each figure. For Exercise 29, find the area also.Find the perimeter of the triangle.
A. 25
feet
B. 25
feet
C. 54
feet
D. 25
feet
Mathematics
For the food described, find the percent of total calories from fat. If necessary, round to the nearest tenth of a percent.Salad dressing serving size 60 tablespoons. CaloriesTotal 60From fat 18
A. 15% B. 3% C. 333% D. 30%
Mathematics