What is the correct setup for finding the cost of renting a boat when you must pay $15 down and $7.50 for each half-hour? (hint: use c for cost and t for time.)

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14