exam Maths Puzzle Numerical Ability

Solve x + 4y = 12 for y. Write the answer in the form y = mx + c, where m and c are fixed real numbers.

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exam Other Question

What is the GCF?

-24a2b3c4 - 36a4b3c2

a. 4a2b2c2
b. -6a2b3c2
c. -12a2b3c2
d. none of the above
If you buy 6 pens and 1 mechanical pencil you will only get $1 change from your $10 dollar bill, but if you buy 4 pens and 2 mechanical pencils you will get $2 change. How much does each pen and mechanical pencil cost?