Let x be cost notebook and y be cost of index card
According to first condition
3x+4y=32
According to second comdition
5x+5y=32+15
Solve the two equations
Answer:
-5/3 ft/sec
Step-by-step explanation:
In this question, we are asked to calculate the rate at which the height of the top of a ladder is changing given that the lower end is being dragged at a particular rate.
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But as 2 is the gradient, and 1 is the y-intercept. If you’re trying to find the value of y and x, sub 0 into x: y= 2(0) + 1
So y would equal 1
Then sub 0 into y: 0= 2x + 1
So x would equal -1/2
Answer: The equation: x=-6
Step-by-step explanation: Use desmos for graphing equations