Can someone plz help me solved this question! I need help ASAP! Help me!

Answers:

You are investing 3000 at 8% and 5000 at 10%

Work Shown:

x = amount invested at 8% interest

y = amount invested at 10% interest

"you have $2000 more invested at 10% than 8%" means that y = x+2000. Whatever x is, add on 2000 to get y.

Assuming we're talking about simple interest (and not compound interest), then having x dollars in an account that pays 8% annual interest will yield 0.08x dollars of interest after 1 year.

Similarly, the 10% account will get us 0.10y dollars in interest

In total, 0.08x+0.10y dollars overall is earned in interest through the two combined accounts. This is set equal to 740 as stated in the instructions.

So we have the equation 0.08x+0.10y = 740

Plug in y = x+2000 and solve for x

0.08x+0.10y = 740

0.08x+0.10( y ) = 740

0.08x+0.10( x+2000 ) = 740

0.08x+0.10x+0.10*2000 = 740

0.08x+0.10x+200 = 740

0.18x+200 = 740

0.18x+200-200 = 740-200

0.18x = 540

0.18x/0.18 = 540/0.18

x = 3000

Plug this into y = x+2000 to find y

y = x+2000

y = 3000+2000

y = 5000

As a check, we see that 0.08*3000 = 240 is the amount of interest earned from the 8% account after one year. And 0.10*5000 = 500 is the amount earned from the 10% account after one year. Added together they get us 240+500 = 740 which is the proper amount of interest to have after one year. The answers have been confirmed.

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b