It is the 2nd one and 4th one. The x intercepts are -1 and -3, so the factors are x + 3 and x + 1. The 4th choice is the actual equation and the 2nd is the factors

4 0

2 years ago

A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a pers

Arturiano [62]

Answer:

A person who watches 8.5 hours of TV can do 30.4 sit ups.

Step-by-step explanation:

The regression equation is used to predict or estimate the value of the response (or dependent) variables using the information about the explanatory (or predictor) variables.

The general form of a regression equation is:

$y=ax+b$

Here,

y = dependent variable

x = independent variable

a = intercept

b = slope

The regression equation representing the relationship between hours of TV watched per day (x) and number of sit ups a person can do (y) is:

$y=-0.74x+36.359$

Compute the number of sit ups a person who watches 8.5 hours of TV can do as follows:

$y=-0.74x+36.359$

$=(-0.74\times 8.5)+36.359\\=-6.29+36.659\\=30.369\\\approx 30.4$

Thus, a person who watches 8.5 hours of TV can do 30.4 sit ups.

6 0

3 years ago

Four times the number of coins in my pocket plus five more is twenty-nine. Write an equation for the number of coins in my pocke

Lynna [10]

There are six coins already in pocket, but let’s say we don’t know it.

We would figure it out by reversing the problem. Let’s start with twenty-nine. We would subtract 5, because we are reversing. Now we have 24. Now, let’s divide by four. We would get 6.

A simpler answer would be 29 - 5 [divided by] 4 = [answer]

4 0

3 years ago

Principle 1600, rate 6 ,time 2.5 years find CI

shutvik [7]

Answer:

C.I = $251.2

Step-by-step explanation:

P = Principal amount = 1600

r = rate of annual interest = 6%

n = period / no. of years = 2.5 years

C.I = (P* (1+r^n))-P

C.I = (1600*(1+0.06)^2.5))-1600

C.I = (1600*(1.06^2.5))-1600

C.I = (1600*1.157)-1600

C.I = 1851.2-1600

C.I = 251.2

5 0

3 years ago