90x + 4
Factor out GCF
2 ( 45x + 2)
$5 each car
3 hours = 12 cars
÷3 ÷3
1 hours = 4 cars
×8 ×8
8 hours = 32 cars
32 cars × $5 per car =
$160
They earned $160 in 8 hours, from washing 32 cars.
The answer is 2,100. since there are 3 feet in 1 yard, you would multiple 700 by 3.
To find the inverse, switch the variables and solve for f(x).
x = e^f(x) + 6
x - 6 = e^f(x)
f(x) = ln(x-6)
hope this helps :)
12 out of 50 are over 6 feet (12/50)
Therefore 38 are under 6 feet (38/50)
