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Zielflug [23.3K]
2 years ago
11

Evaluate the function f(x)=-2x+7 at the indicated values a) find f(3) b) find f(-7)

Mathematics
1 answer:
Anestetic [448]2 years ago
6 0

Answer:

-13

Step-by-step explanation:

f(x)=2x-7

f(-3)=2(-3)-7=-6-7=-13

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Which inequality matches the graph
Anika [276]

Answer:

D) x ≤ 3

Step-by-step explanation:

The inequality that matches the graph is x ≤ 3. This is because x is less than or equal to 3 as shown in the graph.

7 0
3 years ago
Tasha invests $5,000 annually at 6% and an additional $5,000 annually at 8%. Thomas invests $10,000 annually at 7%. Which statem
Setler79 [48]

Answer:

B is correct.

Step-by-step explanation:

Compound Interest Formula:

V(t)=P(1+\frac{r}{n})^{nt}

Tasha invests in two ways

Case 1:

  • Principal P=$5,000
  • Rate of Interest r=0.06
  • Time t=t
  • n=1

V(t)=5000(1+0.06)^t

V(t)=5000(1.06)^t

Case 2:

  • Principal P=$5,000
  • Rate of Interest r=0.08
  • Time t=1
  • n=1

V(t)=5000(1+0.08)^t

V(t)=5000(1.08)^t

Total amount yield by Tasha = 5000[(1.06)^t+(1.08)^t]

Thomas Investment

  • Principal P=$10,000
  • Rate r= 0.07
  • t=t
  • n=1

Total amount yield by Thomas = 10000(1.07)^t

Now we make table for Tasha and Thomas different value of t

    t                  Tasha                  Thomas

   1                  $10,700                 $10,700  

   2                 $11,450                  $11,449

   3                 $12,254                 $12,250

   4                 $13,115                  $13,108

In table we can see Tasha investment will yield more from Thomas.

Thus, Tasha’s investment will yield more over many years because the amount invested at 8% causes the overall total to increase faster.

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Answer:384

Step-by-step explanation:

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Answer:

7x + 15x= 21x

Step-by-step explanation:

7x + 15x

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= 22x

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Which word BEST describes 3x, 5y, and z in the expression 3x − 5y + z?
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