1.The sum of 2 numbers is 17. The second number is 3 more than the first number. What are the 2 numbers? a. Write the equation
b. Solve for the variable USING balancing.
c. Check your work: Show how you do this.

PLEASE HELP

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0