exam Maths Puzzle Numerical Ability

Perform the requested operation or operations.
14) f(x) = x + 10, g(x) = 8x - 14
Find (f ∘ g)(x).

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exam Other Question

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? perform the indicated operations. write the resulting polynomial in standard form.

(-5x^6-13x^5-19) + (3x^6+9x^5+3)
a. -2x^6-4x^5-16
b. -2x^6+14x^5+22
c. -22x^11
d. -2x^6-4x^5+22