20+2•(5+4^1) keep in mind of PEMDAS, so solve in the order P: Parentheses E: Exponents(in this case you would solve the exponent before the parentheses M: Multiplication D: Division A: Addition S: Subtraction
First of all, the minus sign before the parenthesis changes the sign of all the terms inside:

Now, we can sum like terms:

So, the final expression is

Answer:
Answer is (a)
Step-by-step explanation:
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Step-by-step explanation:
There are 5280 feet in a mile and 3600 seconds in an hour.
So a truck driving 45 miles an hour would be driving:
x
x
=
= 66 feet per seconds