Murphy loves pistachio nuts. Every Saturday morning, she walks to the market and buy some. Last week, she bought two pounds and paid $7.96, and this week she bought only one half pound and paid $1.99, what's the constant rate of proportionality?

3.98

Step-by-step explanation:

From the above question,

Cost is directly proportional to the Number of pounds

Hence:

C ∝ N

= C = kN

Where k = Proportionality constant

We are told:

Last week, she bought two pounds and paid $7.96,

Hence:

7.96 = 2k

k = 7.96/2

k = 3.98

This week she bought only one half pound and paid $1.99,

1.99 = k × 1/2

k = 1.99/ 1/2

k = 3.98

Hence, the constant rate of proportionality is 3.98

no this is a nonlinear negative

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk