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If z(t)=2t²+7t-4, find z(-3) and z(4). A) z(-3)=-43; z(4)= 56 B) z(-3)=-7; z(4)= 56 C) z(-3)=21; z(4)= 35 D) z(-3)=11; z(4)= 88
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If z(t)=2t²+7t-4, find z(-3) and z(4).

A) z(-3)=-43; z(4)= 56
B) z(-3)=-7; z(4)= 56
C) z(-3)=21; z(4)= 35
D) z(-3)=11; z(4)= 88

User Apurva Patil
by
6.2k points

1 Answer

3 votes
z(t)=2t²+7t-4,

Then

z(-3) = 2(-3)**2 +7(-3) -4

z(-3) = 2*9 -21 -4 = 18 -25 = -7


z(4) =2(4)**2 +7(4) -4

z(4) =2(16)+28 -4 = 32 +24 = 56


User Mittal Patel
by
6.1k points
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