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evaluate –4ab when a = –2 and b = 5.

–40

–14

14

40

40

Step-by-step explanation:

The answer is 40.

Step-by-step explanation:

a = -2

b = 5

a times b = -10

So then the question is: -4 x (-10)

Negative four times negative ten is equal to 40.

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98