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If z(t) = 2t2 + 7t – 4, find z(–2) and z(7). A. z(–2) = –26; z(7) = 143 B. z(–2) = –10; z(7) = 143 C. z(–2) = 11; z(7) = 101 D. z(–2) = –2; z(7) = 241

If z(t) = 2t2 + 7t – 4, find z(–2) and z(7). A. z(–2) = –26; z(7) = 143 B. z(–2) = –10; z(7) = 143 C. z(–2) = 11; z(7) = 101 D. z(–2) = –2; z(7) = 241
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If z(t) = 2t2 + 7t – 4, find z(–2) and z(7).

A. z(–2) = –26; z(7) = 143
B. z(–2) = –10; z(7) = 143
C. z(–2) = 11; z(7) = 101
D. z(–2) = –2; z(7) = 241

asked
User Michael Petrotta
by
8.5k points

1 Answer

4 votes

Answer:

B. z(–2) = –10; z(7) = 143

Explanation:

Plug in -2 for t


z(-2)=2(-2)^(2) +7(-2)-4\\=-10\\

Plug in 7 for t


z(7)=2(7)^(2) +7(7)-4\\=143\\

answered
User Hetal Khunti
by
7.9k points
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