Evaluate −15 + (−4).
a: 11
b: -11
c: 19
d: -19

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

A(t)=728(1+0.04)^t how much money did aditya originally invest