A retanglular athletic field has an area of 40x2+190x-50. The width of the field is 8x-2. What is the length of the athletic fie
1 answer:
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ANSWER
C. 28
EXPLANATION
The given expression is
We want to evaluate this function at x=-2.
We just have to substitute x=-2 into the given expression.
In other words, we have to replace x with -2 wherever we see x in the expression
We evaluate the exponent to get
We multiply next to get:
We now add to obtain:
The correct answer is C
9514 1404 393
Answer:
B
Step-by-step explanation:
Sam wants the magnitude of the difference from 78 ounces to be less than 2.5 ounces. He can find the limits by setting that magnitude to 2.5.
