Ken saves $140 per month. if this is 2.5% of his monthly income, how much does he earn per month ?

The product of two negative rational numbers is always zero sometimes zero never zero

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Nine more than four times a number is the same as one less than twice the number. find the number?