I NEED THIS ASAP PLEASE! Three multiplied by the first number is equal to teh second number plus 4. The second number is equal to one plus twice the third number. The third number is one less than the first number. What is the sum of all three numbers? 1st + 2nd + 3rd = ?

Simone claims the initial value and y-intercept are the same thing on a graph. is she correct? if you know that a line has a slope of and a y-intercept of 7, what is the equation for that line in slope-intercept form?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882