Aldo made an international phone call for 4.5 minutes. he was charged $0.26 for each minute. find the amount he paid.

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)