Find the product: (-3) (-5) All I managed to gather is to multiple - 3 * - 5 = 15 am I missing a step?

If h (x) = 1/2x^4-3x^3, find h (4)

An aquarium holding African cichlids is 6 inches higher than it is wide. It's length is 25 inches, and it's volume is 7000 cubic inches. What are the heigh and width of the aquarium?

Jamie has $500 to invest for 3 years. She finds a bank that will invest her money at a simple interest rate of 5%. Interest is T is equal to the principle P times the product of the rate r as a decimal and the time d in years.

If Mrs Murphy separates her class into groups of 4 students each, 1 student is left over. If she separates her class into groups of 5 students each, 2 students are left over. What is the least number of students the class could have?

What is absolute maximum and absolute minimum

Anton has 4 pennies, 1 dime, and 2 dollar bills. He buys a granola bar for $0.89. How much money does he have left? ones, tenths, hundredths

An expression is written as m-5 (m+3) + 7m. What is the value of the expression when m=x+1?

Cormac is making 29 phone calls each week as part of a fundraiser. Last week, he made 10 phone calls on weekdays. Which equation could be used to find x, the number of phone calls he made last week on weekend days?

Jasmin's dog weighs 58 pounds. Her vet told her that a healthy weight for her dog would be less than or equal to 40 pounds. Jasmin's dog can lose an average of 1.5 pounds every week.

A town with an initial population of 2,000 doubling in size every 10 years. Exponential function or no?