The sunglasses cost €70 The exchange rate is €1 = £0.895
Emad says, "The sunglasses cost less than £60"
b) Using a suitable approximation, show that Emad is wrong.​

How do i do this? i don’t understand

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?