exam Maths Puzzle Numerical Ability

Find values for m and b in the following system so that the solution to the system
is (-3, 4).
5x + 7y = b
mx + y = 22

Read Solution (Total 0)

exam Other Question

PROBLEM:
SOLVE THE INEQUALITY AND WRITE THE SOLUTION IN INTERVAL NOTATION.
2x^2+8x-10>0

****I KNOW HOW TO SOLVE AN INEQUALITY BUT THIS ONE IS A LITTLE HARDER THAN USUAL...
( Please help me with this problem.

One third(1/3) of a stack of paper and a one (1) pound book will balance one fourth(1/4) of the stack of paper and 3 of the books - How much does half the stack of paper weigh?

Thanks for your help.