The square of the binomial x-4 has the form x^2-ax+16. What is the value of a?

A movie theater charges $10.50 per ticket and $5 per bucket of popcorn. You never buy the popcorn because you think it's too expensive. Is the total price you pay proportional to the number of tickets you buy?

Ms. Nina has 10 lbs of 25% sugar syrup. How much water does she need to add to make 10% sugar syrup?

The GCF of any two odd numbers is always odd

What digit is in the tenths place 512.386

Add parentheses to the expression below 63-15+4*5

A large bottle of dragon mouthwash cost $5.00 before tax and 5.30 after tax. What is the percentage of the tax

A school is arranging a field trip to the zoo. The school spends 629.28 dollars on passes for 35 students and 3 teachers. The school also spends 325.85 dollars on lunch for just the students.

Which equation represents y = x2 + 16x + 70 in vertex form?

Explain why a square can never be a trapezoid

which shows the correct substitution of the values, a, b, andc from the equation - 2=-x+x2-4 into the quadratic formula