300
A mechanic named Ronald plans to work a maximum of 10 hours tomorrow, and no more, doing tune-ups and oil changes. It takes 1 hour to perform a tune-up and 2 hours to perform an oil change.
Select the inequality in standard form that describes this situation. Use the given numbers and the following variables.
x = the number of tune-ups
y = the number of oil changes
1+x+2+y≤10
x+2y≥10
x+2y≤10
1+x+2+y≥10
x+2y≤10