If f(x) = (3x + 7)², then f(1) = ?

A.) 10

B.) 16

C.) 58

D.) 79

E.) 100

A.) 10

B.) 16

C.) 58

D.) 79

E.) 100

f(x) = (3x + 7)²

f(1) = [3(1) + 7]² {substituted 1, in for x, into f(x) = (3x + 7)²}

= (3 + 7)² {multiplied 3 by 1}

= 10² {added 3 and 7}

= 100 {evaluated the exponent}

f(1) = [3(1) + 7]² {substituted 1, in for x, into f(x) = (3x + 7)²}

= (3 + 7)² {multiplied 3 by 1}

= 10² {added 3 and 7}

= 100 {evaluated the exponent}

**E.) 100**

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