David works at the t-shirt shack selling tees. the equation y = 15x – 520 represents the profit that the t-shirt shack makes for each t-shirt sold, where y is the total profit and x is the number of t-shirts sold.
• how many t-shirts does the t-shirt shack need to sell to make a profit of $140?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

10% of 1,900,000. show me how you got the answer

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −