Kayla and jody are working at a station. they have been given four cards with four different functions on them.

function a function b function c function d
f(x)=2^x+1 f(x)=2(x‒1)^2 f(x)=2x+2 f(x)=2x^2‒1

kayla states that function d always exceeds the other functions. jody doesn't think kayla's statement is true. which values of x disproves her claim? explain your reasoning.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.