Factor the expression.
25a + 15 =

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar