Answer:
f(-4) = -15
Step-by-step explanation:
In f(-4), x = -4.
Substitute "x" for -4 in the function.
f(x) = 5x+5
f(-4) = 5(-4)+5
f(-4) = -20+5
f(-4) = -15
The multiple choice answers are not correct.
Answer:
542 miles
Step-by-step explanation:
65 miles/hour x 4.5 hours = 297 miles for the first part
70 miles/hour x 3.5 hours = 245 miles for the second part
297 + 245 = 542 miles
Simplifying the expression (x - 2y) + (3x + 4y).
Work:
(x - 2y) + (3x + 4y)
Combine like terms.
x + 3x = 4x
-2y + 4y = 2y
Reform the expression.
4x + 2y
Simplified Expression: 4x + 2y.
