What number gives a result of −1 when 99 is subtracted from the quotient of the number and 4

Vanessa earns a base salary of $400.00 every week with an additional5% commission on everything she sells. vanessa sold $1650.00 worth of items last week.

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?