Find the best buy (based on cost per unit).You have a coupon for 93 cents off Brand A cereal and a coupon for 45 cents off Brand B. A box of Brand A cereal costs $3.10 for 15.5 ounces. A box of Brand B cereal costs $4.05 for 22.5 ounces. If you use a coupon, which cereal is the better buy?
A. Brand B
B. Not enough information
C. Brand A
D. Equal value
Answer: C
Mathematics
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Estimate the product by first rounding each number so that there is one nonzero digit.7.1 × 35
A. 400 B. 280 C. 2800 D. 28
Mathematics
Factor the polynomial completely.128x2 - 200y2
A. 8(4x + 5y)(4x - 5y) B. Does not factor C. (32x + 40y)(4x - 5y) D. (4x + 5y)(32x - 40y)
Mathematics
Suppose the point (2, 4) is on the graph of y = f(x). Find a point on the graph of the given function.y = f(x + 1)
A. (2, 3) B. (2, 5) C. (3, 4) D. (1, 4)
Mathematics
Find f'(x) at the given value of x.f(x) = x3 + 3; Find f'(2).
A. 15 B. 13 C. 12 D. -12
Mathematics