Evaluate the following expression if w = 9, x = 7, and y = 1. wx + 4
2 answers:
Answer:
67
Step-by-step explanation:
We are given the expression:
and asked to evaluate when w=9, x=7, and y=1.
The expression does not contain the variable y, so we can disregard it.
However, the expression does have the variable x and w. We can substitute 9 in for w and 7 in for x.
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
First, multiply 9 and 7.
9*7=63
Next, add 63 and 4.
The expression wx+4 when evaluated for w=9 and x=7 is equal to 67.
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If Randy has driven for one more hour at the same rate, the number of hours she must have droven is 6 hrs and the total distance is given by
distance = 55 x 6 = 330 miles.