Evaluate: 13 × 20 – 15 × 9 + 20 × 7 – 6 × 15.

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 1, 2−√3

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?