a scholarship fund raised $7000 in contributions. part was invested in bonds paying 6% interest, and the rest was invested in bank certificates paying 8.5%. if the total annual income is $520, find the amount invested at each rate.​

i dont know

step-by-step explanation:

the answers c

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: