There are 2 mistakes in the working below.
(a) circle the 2 mistakes in the working.
[13 -4 -3-2)]+5 +10[5+(-3)]
= [9 - 6]+5+10(-2)
= 3+5+(-20)
(b) rewrite the correct working and hence, evaluate the answer.

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup