Alocal bus travels 7mph slower than the express. the express travels 45 mi in the time that it takes the local to travel 38 mi. find the speed of each bus

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

Solve the following: 12(x^2–x–1)+13(x^2–x–1)=25(x^2–x–1) 364x–64x=300x